68 



thickened midrib in the lower portion of frond and the character of 

 fructified branchlets, having fruits of both kinds in roundish lateral 

 branchlets as well as beneath the apex of the terminal segments, as 

 shown in fk r . 7. 



o * 



PL. LXYII. Fig. 1 : tetrasporic frond of Carpopcltis angitsta 

 (Harv.) Okam., \ . Fig. 2 : portion of a branch having thickened 

 midrib, -^-. Fig. 3 : cross-section of frond, 3 ". Fig. 4 : longitudi- 

 nal section of frond, 3 j. Fig. 5 : cross-section of a tetrasporic ramu- 

 lus, slightly magd. Fig. 6 : tetraspores, 2 *. Fig.- 7 : portion of 

 frond bearing cystocarps, \ . Fig. 8 : cross-section of a cystocarpic 

 ramulus, slightly magd. Fig. 9 : cystocarp, s /- ^'.?- 10 : placental 

 cell, 34._Fig. 11: spore, ^ . 



Carpopeltis angusta (Harv.) Okam. 

 A 4 &. 



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